Hokkaido boxwood
The source of the variety. Hokkaido Huangyang, also known as Japanese Huangyang, is originally from Sapporo City, Hokkaido, Japan. Introduced in 1986, after years of breeding and selection, it has become an excellent new variety suitable for the climatic conditions in northern China.
Characteristics. The leaves of Hokkaido boxwood are wide and oval, the top is obtuse and round, the top tip is stout, the top advantage is obvious, single stem is straight up, showing excellent tree characters. The growth rate is relatively fast, the annual growth rate is 70,000cm, and the height of the 5-year-old tree is more than 3 meters. Hokkaido boxwood has a very obvious trunk and can be planted as an evergreen broad-leaved tree in urban greening.
The adult tree can endure the low temperature of-23.9℃, and the drought tolerance is also better than that of the common Euonymus tomentosa. It has a strong ability to absorb harmful gases and has strong resistance to harmful gases such as sulfur dioxide and hydrogen fluoride. It is suitable for planting in the cold and dry areas of the north in winter.
The poplar tree in Hokkaido is tall and straight, evergreen all the year round, can be pruned and reshaped, can be planted alone, planted in rows, or planted in groups. The tree is tall and the crown remains green in winter. After the beginning of winter, the ripe fruit cracked, revealing the red aril and embedded in the green leaves, which is pleasing to the eye and has great ornamental value and development value.
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Several propagation techniques of Populus tomentosa in Hokkaido
There are many breeding methods of Populus tomentosa in Hokkaido. Here are some common methods: 1. Cutting method: cutting method is divided into hardwood and tender wood cutting method. Hardwood cuttings take place between October of each year and the end of March of the following year. For units with sufficient provenances, cuttings can be cut slightly longer, units lacking in provenances, cuttings can be slightly shorter, cuttings are 8 to 15 cm long, cuttings are generally 3 to 5 cm deep, and roots can grow after 1 month. As long as the cuttings are carried out according to the following methods, the seedlings with better growth can be obtained quickly: 1
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Cutting Seedling technique of Populus tomentosa in North China
Populus tomentosa is a southern evergreen tree species, which belongs to Populus tomentosa. For many years, it is deeply loved by people because of its low plant, compact, dense leaves, beautiful shape, evergreen and many other advantages, and is widely used in hedge and modeling design in landscaping. It is one of the most widely used tree species in northern landscaping, but it has been difficult to raise seedlings in the north due to the influence of climate and other factors. The greening seedlings in the north can only be transported over a long distance from the south, which not only increases the cost, but also the survival rate of seedlings is low. In view of this, we conscientiously summarize the classics in the cuttage and seedling raising of boxwood.
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